- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21206-12B1" - Not available
VW - Golf, Polo, Tiguan, T-ROC, Caddy; AUDI - A3, Q3; SEAT - Leon, Ibiza; SKODA - Scala, Kamiq